Technical Grade VP/VA Copolymer
VP/VA Copolymers are with different rations of vinylpyrrolidone to vinyl acetate and available as white powder or clear transparent solutions in water,ethanol and isopropanol.It’s forms hard,glossy,flexible,water-removable,oxygen permeable films which adhere to glass,plastics and metals,these properties,coupled with the ability to control their hydrophilicity through monomer composition,lead to extensive its industrial application.
Key Technical Parameters:
|
Product |
|||
| Appearance | White to creamy white powder | Transparent to slight yellowish liquid | |
| VP/VA | 60/40 | 60/40 | 70/30 |
| K Value | 27-35 | 27~35 | 27~35 |
| Monomers | 0.2% max. | 0.2% max. | 0.2% max. |
| Water | 5.0% max. | 48~52% | 48~51% |
| Solid Content | 95% max. | 48~51% | 48~52% |
| Sulphated Ash | 0.1% max. | 0.1% max. | 0.1% max. |
| pH Value(10% in water) | 4.0~7.0 | 4.0~7.0 | 4.0~7.0 |
Applications:
VP/VA copolymers widely industrial application are in hot melt adhesives,photoresist binders and coatings for ink jet media paper,plastic film,Agriculture & other substrates.
*Coatings on paper,film,other substrates *Water remoistenable adhesives
*Water soluble adhesives *Decorative and protective coatings
*Photoresist/solder mask binders *Agricultural chemicals
*Bioadheives *Protective masks
*Plant leaf sprays
